# Instantaneous centre of a body rolling with sliding on a stationary curved surface lies

1.  At the point of contact

2.  On the common normal at the point of contact

3.  On the common tangent at the point of contact

4.  At the centre of curvature of the stationary surface

5.  Both (B) and (D)

5

Both (B) and (D)

Explanation :
No Explanation available for this question

# The number of degrees of freedom of a five link plane mechanism with five revolute pairs as shown in the figure is

1.  3

2.  4

3.  2

4.  1

4

2

Explanation :
No Explanation available for this question

# In a cam mechanism with reciprocating roller follower, the follower has a constant acceleration in the case of

1.  Cycloidal motion

2.  Simple harmonic motion

3.  Parabolic motion

4.  3 – 4 – 5 polynomial motion

4

Parabolic motion

Explanation :
No Explanation available for this question

# The cross head velocity in the slider crank mechanism, for the position shown in the figure is

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# A wheel of centroidal radius of gyration ‘k’ is rolling on a horizontal surface with constant velocity. It comes across an obstruction of height ‘h’. Because of its rolling speed, it just overcomes the obstruction. To determine v, one should use the principles of conservation of

1.  Energy

2.  Linear momentum

3.  Energy and linear momentum

4.  Energy and angular momentum

4

Energy

Explanation :
No Explanation available for this question

# A cord is wrapped around a cylinder of radius ‘r’ and mass ‘m’ as shown in the given figure. If the cylinder is released from rest, velocity of the cylinder, after it has moved through a distance ‘h’ will be

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# Consider the following statements 1. A round bar in a round whole form a turning pair 2. A square bar in a square hole forms a sliding pair 3. A vertical shaft in a footstep bearing forms a successful constraint Of these statement

1.  1 and 2 correct

2.  2 and 3 correct

3.  1 and 3 correct

4.  1, 2 and 3 correct

4

1, 2 and 3 correct

Explanation :
No Explanation available for this question

# A bicycle remains stable in running through a bend because of

1.  Gyroscopic action

2.  Coriolis acceleration

3.  Centrifugal action

4

Centrifugal action

Explanation :
No Explanation available for this question

# In the four-bar mechanism shown in the given figure, links 2 and 4 have equal lengths. The point P on the coupler 3 will generate a/an

1.  Ellipse

2.  Parabola

3.  Approximately strait line

4.  Circle

4

Ellipse

Explanation :
No Explanation available for this question

# In gears, interference takes place when

1.  Tip of a booth of a mating gear digs in to the portion between base and root circles

2.  Gears do not move smoothly in the absence of lubrication

3.  Pitch of the gear is not same

4.   Gear teeth are undercut

4